feat: ajout d'une interruption 20 qui permet de faire un DUMP du cpu sur l'écran

include/asm.h

@@ -7,6 +7,9 @@
 #   define _ASM
 
 /******************************************************************************/
+
+#   define int20 asm("int $0x14")
+
 #   define halt() asm("hlt"::)
 
 #   define sti() asm("sti"::)

lib/handlers_asm.S

@@ -16,6 +16,7 @@ jmp exception_suite
 .endm
 
 .macro  semidumpcpu
+cli
 pushl %ds
 pushl %es
 pushl %fs
@@ -88,6 +89,16 @@ pushl $0x00
 semidumpcpu
 call sysenter_handler
 
+.global wrapper_interruption20
+wrapper_interruption20:
+pushl %ss
+pushl %esp
+pushf 
+pushl %cs
+pushl $0x14
+semidumpcpu
+call interruption_handler
+
 .global wrapper_interruption
 wrapper_interruption:
 pushl %ss

lib/keyboard.c

@@ -247,8 +247,7 @@ unsigned convert(u32 keypressed)
 
 	else if (key == SCAN_F9)
 	{
-		regs    dump;
-		show_cpu(&dump);
+		int20;
 	}
 
 	else if (key == SCAN_F10)
@@ -363,6 +362,7 @@ unsigned convert(u32 keypressed)
 
 __attribute__((interrupt)) void keyboard_handler(exception_stack_noerror *caller)
 {
+	cli();
 	u8      scancode, ascii;
 	while ((inb(0x64) & 1) == 0);
 	scancode = inb(0x60);
@@ -375,6 +375,7 @@ __attribute__((interrupt)) void keyboard_handler(exception_stack_noerror *caller
 		bufferascii[ptrascii] = ascii;
 	}
 	irqendmaster();
+	sti();
 }
 
 /******************************************************************************/

lib/mouse.c

@@ -66,6 +66,7 @@ void outmsecmd(u8 command)
 
 __attribute__((interrupt)) void mouse_handler(exception_stack_noerror *caller)
 {
+	cli();
 	u8      mbyte = inb(0x60);
 	s8      changex, changey;
 
@@ -142,6 +143,7 @@ __attribute__((interrupt)) void mouse_handler(exception_stack_noerror *caller)
       endofint:
 	irqendmaster();
 	irqendslave();
+	sti();
 }
 
 /*******************************************************************************/

lib/process.c

@@ -76,8 +76,10 @@ END */
 
 void processexit(void)
 {
+	cli();
 	deleteprocess(getcurrentpid());
 	switchtask(maketid(1,1));
+	sti();
 }
 
 /*******************************************************************************/
@@ -257,6 +259,7 @@ process* findcurrentprocess(void)
 
 void switchtask(tid_t tid)
 {
+	cli();
 	tid_t previous = current;
 	task *atask = findtask(tid);
 	if (atask==NULL) return;
@@ -346,6 +349,7 @@ task* findcurrenttask(void)
 
 void deletetask(tid_t tid)
 {
+	cli();
 	stoptask(tid);
 	process* aprocess=findprocess(tid.pid);
 	if (aprocess==NULL) return;
@@ -353,6 +357,7 @@ void deletetask(tid_t tid)
 	if (atask==NULL) return;
 	TAILQ_REMOVE(&aprocess->task_head, atask, tailq);
 	vfree(atask);
+	sti();
 }
 
 /*******************************************************************************/
@@ -360,6 +365,7 @@ void deletetask(tid_t tid)
 
 void runtask(tid_t tid)
 {
+	cli();
 	task *atask=findtask(tid);
 	if (atask==NULL) return;
 	if (atask->status == TASK_STATUS_READY)
@@ -367,6 +373,7 @@ void runtask(tid_t tid)
 		atask->status = TASK_STATUS_RUN;
 		switchtask(tid);
 	}
+	sti();
 }
 
 /*******************************************************************************/
@@ -374,6 +381,7 @@ void runtask(tid_t tid)
 
 tid_t createtask(pid_t pid,u8 *entry, bool kerneltask)
 {
+	cli();
 	tid_t tid;
 	tid.pid=pid;
 	process* aprocess=findprocess(pid);
@@ -429,6 +437,7 @@ tid_t createtask(pid_t pid,u8 *entry, bool kerneltask)
 	new->dump.edi = 0;
 	new->status = TASK_STATUS_READY;
 	return new->tid;
+	sti();
 }
 
 /*******************************************************************************/
@@ -436,9 +445,11 @@ tid_t createtask(pid_t pid,u8 *entry, bool kerneltask)
 
 void stoptask(tid_t tid)
 {
+	cli();
 	task *atask=findtask(tid);
 	if (atask==NULL) return;
 	atask->status=TASK_STATUS_STOP;
+	sti();
 }
 
 /*******************************************************************************/
@@ -446,6 +457,7 @@ void stoptask(tid_t tid)
 
 pid_t createprocess(u8 *src, bool kerneltask)
 {
+	cli();
 	tid_t previous = current;
 	current.pid = getfreepid();
 	current.number = 0;
@@ -467,6 +479,7 @@ pid_t createprocess(u8 *src, bool kerneltask)
 		cr3=old->pdd->addr->paddr;
 	setCR3(cr3);
 	new->status=PROCESS_STATUS_READY;
+	sti();
 	return new->pid;
 }
 
@@ -475,6 +488,7 @@ pid_t createprocess(u8 *src, bool kerneltask)
 
 void deleteprocess(pid_t pid)
 {
+	cli();
 	stopprocess(pid);
 	process* aprocess=findprocess(pid);
 	if (aprocess==NULL) return;
@@ -482,7 +496,7 @@ void deleteprocess(pid_t pid)
 	TAILQ_FOREACH(next, &aprocess->task_head, tailq)
 		deletetask(next->tid);
 	aprocess->status = PROCESS_STATUS_FREE;
-	
+	sti();
 }
 
 /*******************************************************************************/
@@ -490,6 +504,7 @@ void deleteprocess(pid_t pid)
 
 void runprocess(pid_t pid)
 {
+	cli();
 	process* aprocess=findprocess(pid);
 	if (aprocess==NULL) return;
 	if (aprocess->status == PROCESS_STATUS_READY)
@@ -501,6 +516,7 @@ void runprocess(pid_t pid)
 		atask->status=TASK_STATUS_RUN;
 		switchtask(tid);
 	}
+	sti();
 }
 
 /*******************************************************************************/

lib/shell.c

@@ -449,8 +449,7 @@ int showinfo()
 
 int showregs()
 {
-	regs    dump;
-	show_cpu(&dump);
+	int20;
 	return 0;
 }
 

programs/test2.c

@@ -10,7 +10,7 @@ void main(void)
 {
 	while (true)
 	{
-		if (getticks()%10==0)
+		if (getticks()%100000==0)
 			print("[TEST]\r\n");
 	}
 	exit(1);

system/system.c

@@ -26,6 +26,7 @@ static u8 errormsg[] =
 static u8 key = 0;
 
 extern wrapper_timer;
+extern wrapper_interruption20;
 
 void ok()
 {
@@ -77,6 +78,8 @@ int main(u32 magic, u32 addr)
 	print("\033[37m\033[0m -Initilisation des interruptions");
 	initidt();
 	initpic();
+	setidt((u32) &wrapper_interruption20, SEL_KERNEL_CODE,
+		 ENTRY_PRESENT | ENTRY_RING3 | TRAPGATE, 20);
 	sti();
 	ok();